A procedure to prepare flat and dense composite films of a conjugated polymer poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene] (MEHPPV) and various amounts of neat C-60 by means of electrophoretic deposition from dilute suspensions is reported. It has been observed that deposition from suspensions containing both components results in pinhole-free films, which are applicable to photovoltaic devices, while inhomogeneous films are formed from the suspensions containing only one of the components. The applicability of electrophoretic deposition to obtain polymer-C-60 composite films showing photovoltaic effects has been successfully demonstrated. (C) 2010 Elsevier B.V. All rights reserved.